Striping knife



May 10, 1932. EDMOND'M 1,857,242

' S'1RIPING KNIFE Filed March 20. 1930 l Imam: I

BL] hi5 ahorneu v aha/7 Patented May 10, 1932 STATES PATENT OFFICE WILLIAM H. EDMONDSQN,

OF NEWBURGH, NEW YORK,

ASSIGNOR '10 E. I. DU PON'I.

DE NEMOURS & COMPANY, OF WILMINGTON, DELAWARE, A. CORPORATION OF DELAWARE STRIPING KNIFE Application filed March 20, 198.0. Serial No. 437,376.

This invention relates to an apparatus for striping sheet material and more particularly to an apparatus for striping a continuously moving sheet of coattd cloth or'paper.

In the application of J. S. Turner, Serial Number 481,138, filed Feb. 25, 1930, there is disclosed an apparatus comprising a troughlike receptacle having openings along its apex through which the striping material flows to moving sheet material contacting with the apex of the trough, the quantity of striping material deposited being governed by tilting the trough-like receptacle which operates to vary the area of the openings covered by the sheet material. While the apparatus and method ofthe mentioned application represents a considerable improvement over prior striping methods, there are some disadvantages inherent in the construction of the apparatus as difficulty of cleaning due to its non-seperable construction and by the necessity of replacing the entire trough-like receptacle when worn or when another arrangement and disposition of stripes is desired than that made possible by the arrangement of holes along the apex of the troug This invention has as an object a striping knife that will obviate the above mentioned disadvantages. Another object is to provide a striping knife that is capable of producing as desired any arrangement, disposition or design of stripes without the necessity of replacing the apparatus as a whole. A further object is to provide a strip ing knife having a hardened wearing part that may be inexpensively replaced when worn. A still further object is a striping knife that permits ready access for cleaning and for the interchange'of differently deexemplified by the Figure 1 is an isometric view of my improved striping knife mounted in operative relation to the material to be striped.

Figure 2 is a section through the line 2-2 of Figure 1.

Figure 3 is an elevation of the striping knife as viewed from the front of Figure 1 or from the right of Figure 2.

Figure 4 is a view of the relatively adjustable supporting brackets.

Figure 5 is a plan view of the detachable combs and Figure 6 is an isometric view of a modified form of the invention.

Figure 7 is a section 77 of Figure 6.

In the drawings my improved striping knife is illustrate-d as being of trough-like form comprising two angularly related plates or walls 1 and 2. The colored nitro cellulose jelly which usually corresponds in character to the coating on the sheet material 3 to be striped is contained in the receptacle provided by the plates 1 and 2 and is permitted to escape through passages spaced along the constricted portion of the knife adapted to contact with the sheet material 3. The walls 1 and 2 are separable and have the passages formed on one of the plates. The arrangement of the passages on one of the plates is most conveniently effected by providing a ledge in which the passages are formed, the ledge being integral with or detachably connected with the plate 1 along its lower edge and arranged so that the bottom edge of the ledge 4 lies flush with or below the bottom edge of the plate 1. economical to make the ledge or passage hearing part in the form of a comb, as indicated at 4 or 4-1; in Figure 5, with through slots 5 or 5-0 and detachably connect the comb to the plate 1 by means of screws 6 threaded into the holes 7 or 7-a. The plate 2 is beveled at its lower edge as indicated at 8 to lie flush along the comb 4 and prevent escape of the coloring matter exceptthrough the slots 5 which, with the inside face of the plate 1 and the beveled edge 8, form downwardly directed passages leading from the coloring matter formed by the plates 1 and 2 to taken along the line in the trough It is advantageous and inwardly as indicated at 17 forming a passage 8 through which the coloring material ,is directed tothe passages formed by the slots 5. An arm 9 on plate 2 pivoted at 10 to I an arm 11 extending from plate 1, tends to direct the beveled edge 8 against comb 4. The turnbuckle 12'pivoted at one end to an arm 13 on plate 1 by means of pin 14 andv pivoted at the other end to plate 2 by means of theball head 15 Working in the hole 16, constitutes a means of clamping the beveled edge 8 against the comb 4. When the turnbuckle is released the arm 9 maywith the plate 2 be swun around the pivot 10 to separate the plates or cleaning and for access to the comb. 15.;

The knife is mounted for tilting movement to regulate the effective size of the opening at? the bottom of the passages 5 through which the coloring material may flow forwardly on to the sheet material being striped. It

will be apparent that the quantity of coloring material flowing out of the openings at the bottom of the passages formed by slots5 will be a minimum when the o nings are completely covered by the horlzontally moving sheet material 3, for instance as when'the plate 1 andslots- 5 are in the perpendicular position of Figure 2. As the knife is tilted, the forwardly directed opening defined by the top surface of the sheet 3 and its line of contact along the edge of the comb 4, becomes larger and permits more of the coloring matter to flow through the passages. This forwardly directed opening between the sheet 3 and the opening at the lower end of each slot 5 formed by the separation ofthe front edge of the comb from the sheet is indicated at 19 in Figure 1, this view showing the knife at a slight tilt.

The adjustable tilting and supporting means is shown as comprising a heavy supportinglbar 20, a bracket 21 rigid therewith which is adjustably mounted on a bracket 23 forming apart of a stationary supportmg meansfor the entire structure. For the sake of clearness, the supporting and tilting means are shown only at the left side of Figure 1, but it is to be understood that similar supporting means are preferably provided at each end of the knife. Thebar 20 may be of wood and is made quite heavy to impart rigidity. The bracket 21 has an inwardly extending tongue 22 attached to bar 20 by any suitable means, the tongue fitting into the notched end of the bar 20 so-thatthe front faces of the tongue and bar lie flush as shown in Figure 1. The plate 1 of the knife is secured against the rear face of the bar 20 bymeans of screws 22'. The correspending brackets for the right hand end of the bar 20 as viewed in Figure 1 are indicated by the characters 210 and 23a in Figures 3 and 4.. Bracket 2111, as bracket 21, is provided with a tongue 22a having screw or bolt receiving holes 25 for attachment to bar 20 and the bracket 23a has a supporting extension 240, similar to that on bracket 23, adapted to be clamped to or otherwise constitute a part of the support for the knife. The brackets 2121a have holes 26 and the brackets2323a have holes.27 for the reception of a pivot pin. The brackets 21-21a are held in adjusted osition withi'espect to brackets 2323a wit in the limits allowed by arcuate slots 28 by means of bolts (not shown) which are carried in holes 29 of brackets 2323a and ride in the slots- 28, the clamping of the brackets together being effected by tighten.- ing the nuts on the bolts as will be readily understood.

The coated sheet material to be striped thereon sufliciently to form a slight depression or trough in the paper along the line of contact as indicated in Figure 2. The extensions 24-24a are then clamped to any suitable supporting means which referably em bodies a vertical adjustment or raising and lowering the knife. The bottom edge of the plate 1 is beveled or edge of the comb may-be slightly rounded and form a continuation of the lower edge of plate 1, in order to present a smooth wearing surface to the paper. The amount of tilt given to the knife will depend upon the consistency of the jelly in the trough and the The stripes formed on the sheet material as it passes beneath the striping knife are indicated at '30 in Figure 1. The sheet material then passes through a drying chamber illustrated diagrammatically at 50 heated in any conventional manner as by steam coils the inlet and outlet of which is designated by the numerals 51 and 52. The dimension of the drying chamber in the direction of movement of the sheet 3 is considerably larger than indicated on the drawing where the chamber is shown as broken in order to conserve space. This dimension of the drying chamber is proportloned with respect to its temperature and with respect to the rate of travel of the sheet 3 so that the freshly deposited and wet rounded and the bottom.

striping material is completely dried when it emerges from the drying chamber.

While the striping knife shown in Figure 1 has a length equal to the width of the paper, the knife is usually of greater length so as to accommodate papers of various widths. The removable rubber bulkheads 2, (one of which is shown in Figure 1) are inserted within the width of the paper to prevent the coloring matter from escaping out of the ends of the trough. If the particular comb used has no slots extending beyond the paper, it is then, of course, unnecessary that the bulkheads be positioned within the width of the sheet 3 and they may remain at the ends of the trough beyond the edge of the paper.

As shown in Figure 5, combs, as the comb 4a, may be inserted in the knife having slot widths, as well as the arrangement and disposition of the slots,.ditierent from that of comb 4. A series of these differently designed combs are made up and when a particular design of stripeis desired it is simply necessary to insert the corresponding comb. As 5 shown in Figure 1 the comb 4 produces four stripes. Any comb can. however, be used to produce stripes fewer in number than the slots in a particular comb by the proper location of thebulkheads between which the jelly is confined.

In Figure 6 is shown a striping knife the trough of which is divided into three compartments or chambers 33, 34 and 35, each of which leads respectively to openings 33a, 33b,

35 and 330 along the apex of the trough. Differently colored stripes may be obtained in any desired arrangement or sequence by placing striping material of different colors in the several chambers. The chambers may be con- 40 nected together as a unit but they are preferably separate so that they may be positioned and spaced as desired along the trough formed by the plates 1 and 2. As shown in Figure 7 the chambers are each constricted at the bottom to form a fiat portion that may be conveniently clamped between plates 1 and 2 by the turnbuckle 12 shown in Figure 2. The chambers have each one or more holes 36 and the chambers are each positioned along the trough formed by plates 1 and 2 so that the holes 36 communicate with the slots or passages 5 in the comb. It will be apparent that colored stripes of any desired number, arrangement and spacing may be made by inserting a comb 4 having the necessary number of slots, inserting the chambers so that the holes 36 will register with the desired slots and then filling the chambers with differently colored striping material in any sequence desired.

The ordinary method of striping coated sheet material is to apply a second coat and .scrape away, by means of a notched knife or comb similar to that shown in Figure 5,

that portion of the second coating lying between the notches. The blade or comb in the present invention is, however, in contradistinction to the notched scraping blade previously used, an element of the striping knife which effects the direct deposition of the coloring material in the form of stripes. By making the trough of separable plates the interior may be cleaned and the passagesfreed from any obstructing material and access to the comb is readily obtained. The removable combs are very convenient and economical because they are easily interchanged when it is desired to change the design and because they take the wear and are cheaply replaced when worn. With the detachable combs it is necessary to make the combs only of high grade, hard andlong wearing metal and the remainder of the knife which constitutes the greater bulk of the apparatus can be made of relatively inexpensive material. When one of the hardened steel combs becomes worn it can, therefore, be replaced much cheaper than could a whole knife bar made of hardened steel.

As many apparently widely different embodiments of this invention may be made without departing from the spirit thereof, it is to be understood that I do not limit myself to the specific embodiments thereof except as defined in the appended claims.

I claim:

1. A striping knife comprising a pair of separable walls forming an elongated container or coloring material therebetween and constricted to a relatively narrow contacting portion at the bottom, one of said walls having one or more downwardly directed passages adjacent to its bottom edge leading to the material to be striped, the other of said walls having a face extending along the inside face of said first mentioned wall and adapted to cooperate therewith to form a seal preventing exit of the coloring matter except through said passages and means for clamping said cooperating faces in position to form said seal. Y

2. A striping knife comprising a pair of separable walls forming an elongated container for coloring material therebetween and constricted to a relatively narrow contacting portion at the bottom, one of said walls having one or more downwardly directed passages adjacent to its bottom edge leading to tlie material to be striped, the other of said walls having a face extending along the inside face of said first mentioned wall and adapted to cooperate therewith to form a seal preventing exit of the coloring matter except through said passages, means for clamping said cooperating faces in position to form said seal, supporting means for said knife and means for tilting said knife thereon in adirection transverse to the length of said contacting portion to regulate the quantity of coloring material flowing between the bottom opening of a passage and the sheet material being striped.

3. A striping knife comprising a pair of angularly disposed separable walls forming an elongated container for coloring material therebetween, a ledge having one or more downwardly directed passages positioned along the inner face of one of said walls adjacent the lower edge thereof, the lower edge of said ledge being adapted to contact with the sheet material to be striped, the other of said wallsharing a face extending along the face 6f said ledge and adapted to cooperate therewith to form a sealpreventing exit of the coloring material except through "the passages in said ledge and means adjustable to separafi said walls and for drawing said walls together to clamp said cooperating faces in position to form said seal.

4. A striping knife comprising a pair'of angularly disposed separable walls forming a trough for coloring material, a ledge having one'or more downwardly directed passages positioned along the inner face .of one of said walls adjacent the lower edge thereof, the other of said walls having its lower edge beveled to form a face adapted to extend along and to mate with the face of said ledge and to cooperate therewith .to form a seal preventing exit of. the coloring material except through the passages in said ledge, means exten ing between said walls pivotally connecting said walls to direct the angular movement of said wall having the beveled edge toward the other of said walls to position said faces together, and adjustable clamping means about said pivotal means to draw said walls together in the direction constrained by said plvota'l meansf ,5. A striping knife comprising an elongated container for coloring material, a comb having one or more downwardly directed slots detachably connected to the inner face of one of said walls of said container in the direction of the length of said knife, the lower edge of said comb being adapted to contact with the sheet material to be striped affording a wearing surface for, said knife, and means preventing exit of the coloring material exceptthrough the slots in said comb.

6. YA striping knife comprising an elongated trough-like member and a detachable slotted comb within and along the apex of said trough providing a wearing surface for said 'knife and passages for the exit of striping material in said receptacle, said' comb be- "an elongatedcontainer for coloring material ing of material relatively hard with respect to said trough-like member. 1

7. A striping knife comprising a pair of angularly disposed separable walls forming therebetween, a comb having one or more downwardly directed slots detachably connected to oneof said walls along its inner face and adjacent the edge of'said last named wall, the lower edge of said comb being adapted to contact with the sheet material to be striped affording a wearing surface for said knife, the other of said walls havinga face extending along the face of said comb and adapted to cooperate therewith to form a seal preventing exit of the coloring material except through the slots in said comb, and means for clamping said cooperating faces in position to form said seal.

'8. A'striping knife comprisin a pair of angularly disposed separable wa ls forming an elongated container for coloring material therebetween, a comb having one or more downwardly directed slots detachably connected to oneof said walls along its inner face in'the direction of the length of said knife and adjacent the edge. of said last named wall, the lower edge-of said comb being adapted to contact with the sheet material to be striped affording a wearing surface for said knife, the other of said walls having a face extending along the face of said com and adapted to cooperate therewith to form a seal preventing exit of the coloring material except through the slots in said comb, and adjustable means connecting said walls for separating said walls and for drawing said walls together to clamp said cooperating faces in position to form said seal.

9. A striping knife comprising a pair of angularly disposed separable walls-forming an elongated container for coloring material therebetween, a comb havin one or more downwardly (directed slots etachably connected to. one of said walls along its inner fabein the direction of the length of said knife and adjacent the edge of said last named wall, the lower'edge'of said comb being adapted to contact with the sheet material to be striped affording a wearing surface for said knife, the other of said walls having a face extending along the face of said comb and cooperating therewith to form a seal preventing exit of the coloring material except through the slots in said comb, supporting means for said knife and means for tilting said knife thereon in a direction transverse to the length of said contacting portion to regulate the quantity of coloring material flowing between the bottom opening of a passageand the sheetfmaterial being striped.

c 10. A striping knife comprising a pair of angularly disposed separable walls forming a trough for coloring material, a comb havingone or more downwardly directed slots attached to one of said walls along its inner face for said knife, the other of said walls having its lower edge beveled to form a face adapted to extend along and mate with the face of said comb to cooperate therewith to form a seal preventing exit of the color'ng1 material except through the slots in sai comb, and means adjustable to separate said walls and for drawing said walls together to clamp said cooperating faces together.

11. A striping knife comprising-a pair of angularly disposed separable walls forming a trough for coloring material, a comb having, one or more downwardly directed slots attached to one of said walls along its inner face in the direction of the length of said knife and adjacent the edge of said last named wall, the lower edge of said comb being adapted to contact with the sheet material to be striped affording a w earing surface for said knife, the other of said walls having its lower edge beveled to form a face adapted to extend along and mate with the face of said comb to cooperate therewith to form a seal preventing the exit of the coloring material except throu h the slots in said comb, supporting means or said knife and means for tilting said knife thereon in a direction a transverse to the length of said contacting portion to re latethe quantity of coloring material flowing between the bottom opening so of a passage and the sheet material being striped.

12. In a striping knife, a comb having a plurality of downwardly directed passages for the exit of striping material, and a plurality of separate chambers each of which communicates with one or more of said passages.

. 13. In a striping lmife, a comb having a plurality of downwardly directed passages 0 or the exit of striping material, a plurality of separate chambers each of which communicates with one or more of said passages, and a sup ort for said comb and chambers adjustab e about an axis arallel to the direction of the length of said comb.

' 14. A striping knife comprising a pair of separable walls, a comb on one of sai walls having a plurality of downwardly directed passages, means for clamping the edge of one of said walls along said comb below the upper 0 enings of said passages to form a troug between said walls, and a plurality of removable separate chambers having constricted lower edges adapted to be clamped between the lower ed e ofione of said walls and said comb by sai clamping means, each 7 of said chambers having one or more passages therein adapted to register with the passages in said com r so In testimony whereof, I aflix my signature. WILLIAM H. EDMONDSON. 

